Characteristics:

Chitons are a primitive class of marine mollusks living worldwide. The chitons, also called sea cradles, have a dorsal shell consisting of eight plates (valves). The plates provide flexibility to move across uneven surfaces, as well as robust protection. Chitons displays a powerful adhesion to the surface and is not easily removed by potential predators. Chitons prefer rocky locations.

Taxonomy:

There are two orders of chitons. All the common shallow water chitons in Norway belong to the order Chitonida.